| Source -- Outflow | River | Length (miles) |
Lake Itasca, Minnesota -- Gulf of Mexico | |
Three Forks, Montana -- Mississippi River | |
Yukon Territory -- Bering Sea | |
Southwest Colorado -- Gulf of Mexico | |
Central Colorado -- Mississippi River | |
Northern Colorado -- Gulf of California | |
Eastern New Mexico -- Mississippi River | |
Columbia Lake, B.C. -- Pacific Ocean | |
Stikine Mountains, B.C. -- Slave River | |
Great Slave Lake, N.W.T. -- Arctic Ocean | |
Teton Range, Wyoming -- Columbia River | |
Methy Lake, Saskatchewan -- Hudson Bay | |
Pittsburgh, Pennsylvania -- Mississippi River | |
Double Mountain, Texas -- Gulf of Mexico | |
Northern New Mexico -- Rio Grande River | |
Southwest Colorado -- Arkansas River | |
Southeast Alberta -- Saskatchewan River | |
West Texas -- Matagorda Bay | |
Mt. Robson, British Columbia -- Strait of Georgia | |
Northeast New Mexico -- Canadian River | |
Lake Ontario -- Atlantic Ocean | |
Saskatchewan Glacier, Alberta -- Saskatchewan River | |
Lake Capimitchigama, Quebec -- St. Lawrence River | |
Western Wyoming -- Colorado River | |
North Georgia -- Mobile River | |